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Reuse Pistons and Sleeves?

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WI farmboy

01-23-2002 11:54:22




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I have seen a few pistons that looked terrible at YTMAG.com. It leaves me to think that maybe I could use the existing pistons and sleeves. The tractor is a DC-4 that I've been working on. It was parked when they noticed antifreeze in the oil. More than likely it was the rubber ring at the bottom of the wet sleeve. However, 10 years of sitting outside has frozen two pistons. I don't think bad though. Can I reuse these (they are a bit pricey at the CaseIH dealership) and replace the seals on the wet sleeves? If so what is the procedure for cleaning up the pistons rods, wet sleeves etc.? This can be a pretty detailed response so I'll apologize now. Thanks for the help.

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steve

01-27-2002 19:31:12




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 Re: Reuse Pistons and Sleeves? in reply to WI farmboy, 01-23-2002 11:54:22  
I just got done rebuilding a motor as you said. The rings were stuck to the pistons. I had to break them off. I mounted the pistons in a lathe run slow and "filed" the groves to get the crud out. I sanded the pistons with 320 grit paper. Hone the cylinders, they were .005 oversize. Knock the ridge off the top so the new rings wont hit. Get new rings and reassemble, new o-rings on the liners.



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Paul Pilbrow

03-01-2002 06:36:58




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 Re: Re: Reuse Pistons and Sleeves? in reply to steve, 01-27-2002 19:31:12  
15 years ago I bought a ac-wd with frozen engine $150.00
couldnt budge with 4 foot pipe. filled cyls with auto trans fluid no help.I removed head and put chainsaw gas in 2 corroded cyls then I pounded top of pistons with 2x4 and large hammer this broke them loose, replaced head and rocker assy with original gaskets.rings were still stuck to pistons serviced points carb and fuel sys started with 12 volts. I have been using it ever since cost of parts zero time a few hrs, I had nothing to lose
I didnt want to restore it just wanted to drive it keeping it simple for what its worth Paul

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Paul Pilbrow

03-01-2002 06:34:49




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 Re: Re: Reuse Pistons and Sleeves? in reply to steve, 01-27-2002 19:31:12  
15 years ago I bought a ac-wd with frozen engine $150.00
couldnt budge with 4 foot pipe. filled cyls with auto trans fluid no help.I removed head and put chainsaw gas in 2 corroded cyls then I pounded top of pistons with 2x4 and large hammer this broke them loose, replaced head and rocker assy with original gaskets.rings were still stuck to pistons serviced points carb and fuel sys started with 12 volts. I have been using it ever since cost of parts zero time a few hrs, I had nothing to lose
I didnt want to restore it just wanted to drive it keeping it simple for what its worth Paul

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RobertTX

01-24-2002 05:20:15




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 Re: Reuse Pistons and Sleeves? in reply to WI farmboy, 01-23-2002 11:54:22  
These old engines will run very well and have no oil consumption at conditions outside the factory recommended maximum clearances. The other guys are correct, if no pitting or damage, hone and new rings.



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Kendall

01-23-2002 13:31:14




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 Re: Reuse Pistons and Sleeves? in reply to WI farmboy, 01-23-2002 11:54:22  
Take all the parts to a machine shop. They can clean up most anything. As far as reusing the sleeves, if they are not pitted or gouged, you may be able to get by with re-honing the sleeves and re-ringing the pistons. If the engine wasnt smoking before is sat up for so long, then you should be in luck. I once had an old truck that burned a quart of oil every 40 miles. Hoaning the cylinders and new rings fixed it right up. I took the pistons /rods to a maching shop and they came back looking almost brand new.

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